Patent US4617645A successfully refreshed from Google Patents.
Patent EP0168020A2 successfully refreshed from Google Patents.
EP0168020A2
Expired / Lapsed
EP
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Fluorinated thermoplastic elastomer compositions
Assignee: EIDP Inc
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Filing: 1985-07-09
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Granted: —
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Expires: 2005-07-09
Abstract
Abstract A two-phase fluorocarbon composition in which the continuous phase is a crystalline thermoplastic, and the discontinuous phase is a crosslinked elastomer. The disper- sal phase constitutes 50 to 90% of the total. The composition is prepared by dynamic curing.
Inventors
- 👤 Jose Francisco Pazos
- 👤 Richard Watkin Rees
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 10:26
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/24; C08L; C08L27/00; C08L27/02; C08L27/12; C08J2327/00; C08J2327/02; C08J2327/12; C08L2205/00; C08L2205/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
69 words
A two-phase composition having a continuous phase and a dispersed phase, the continuous phase consisting essentially of a melt-processable crystalline tnermoplastic fluorocarbon resin containing a minimum of 38 percent by weight fluorine, said dispersed phase consisting essentially of an amorphous crosslinked (vulcanizea) fluoroelastomer containing a minimum of 58 percent by weight fluorine, said dispersed phase constituting between about 50 and 90 percent by weight of the two phase composition.
Claim 2
Dependent Claim
69 words
A two-phase composition having a continuous phase and a dispersed phase, the continuous phase consisting essentially of a melt-processable crystalline tnermoplastic fluorocarbon resin containing a minimum of 38 percent by weight fluorine, said dispersed phase consisting essentially of an amorphous crosslinked (vulcanizea) fluoroelastomer containing a minimum of 58 percent by weight fluorine, said dispersed phase constituting between about 50 and 90 percent by weight of the two phase composition.
Claim 3
Dependent Claim
26 words
The composition of Claim 1 in which the crystalline thermoplastic fluorocarbon resin is selected from the class consisting of fully fluorinated or partially fluorinated thermoplastic resins.
Claim 4
Dependent Claim
25 words
The composition of Claim 2 in which the amorphous crosslinked fluorocarbon elastomer is selected from the class consisting of fully fluorinated or partially fluorinatea fluoroelastomers.
Claim 5
Dependent Claim
73 words
A process for the preparation of the two-phase composition of Claim 1 which comprises (a) melt blending a melt-processable crystalline thermoplastic fluorocarbon resin containing a minimum of 38 percent by weight fluorine and an uncured fluoroelastomer containing a minimum of 58 percent by weight fluorine, (b) crosslinking the uncured fluoroelastomer while the crystalline thermoplastic fluorocarbon resin is at a temperature above its crystalline melting point and while the melt blend is undergoing mixing.
Claim 6
Dependent Claim
23 words
The process of Claim 4 in which a chemical curative is added to the melt blend at the beginning of the crosslinking step.
Claim 7
Dependent Claim
16 words
The process of Claim 4 in which the free radicals are generated during the crosslinking step.
Claim 8
Dependent Claim
13 words
The composition of Claim 1 in which the fluoroelastomer is vinylidene fluoride/hexafluoro- propylene/tetrafluoroethylene.
Claim 9
Dependent Claim
16 words
The composition of Claim 7 in which the crystalline thermoplastic fluorocarbon resin is a tetrafluoroethylene/ethylene/perfluorobutyl ethylene.
References Cited (Backward Citations)
No citation records indexed.
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